What Else Is Inside Cells?

Water

• About two-thirds of the human body is water.

• Most chemical reactions within cells could not take place without water.

• Helps cells keep their size and shape.

- Chemical Compounds in Cells

- Chemical Compounds in Cells

Elements and Compounds

• Carbon dioxide, which is found in gas bubbles, is a chemical compound. So is water.

Type of Compound Elements Functions

Carbohydrate Carbon, hydrogen, oxygen

Store and provide energy and make up

cellular parts

ProteinCarbon, hydrogen,

oxygen, nitrogen, and sometimes sulfur

Make up much of the structure of cells and speed up chemical

reactions

Lipid Carbon, hydrogen, oxygen

Store energyMake up cell membranes

- Chemical Compounds in CellsComparing and Contrasting

Nucleic AcidsCarbon, oxygen, hydrogen, nitrogen, phosphorus

Make up DNA and RNA—instructions to carry out life processes

types

typesmade ofincludeinclude

Graphic OrganizerOrganic

Compounds

Carbo-hydratesLipids Proteins

StarchesAmino acids

SugarsFats, oils, and waxes DNA

Nucleic acids

RNA